Expanded class hierarchy of MigratePreRowSaveEvent in Drupal 8
- class \Drupal\migrate\Event\EventBase extends \Symfony\Component\EventDispatcher\Event
- class \Drupal\migrate\Event\MigrateImportEvent
- class \Drupal\migrate\Event\MigratePreRowSaveEvent
- class \Drupal\migrate\Event\MigratePostRowSaveEvent